Also, sulfur isn't a deadly poison by any means (as 'pure sulfur' taken to mean the element sulfur itself)
Its nearly insoluble in water (although presumably slightly, as its sold here in pet shops as roll sulfur (basically just cylindrical sticks of elemental sulfur) for addition to dogs water bowls. Why, I never did bother to look up, it just serves me as a convenient source of sulfur if I don't want to walk as far as a garden center if the weather is shitty)
But whilst some sulfur compounds (such as hydrogen sulfide, the gas that gives rotten eggs their stench, is near enough as lethal as hydrogen cyanide, capable of a similarly rapid knock-down and kill) are toxic, not all of them are by any means. Plenty of them stink, but sulfur itself is pretty inert. I'd bet that if a solid chunk were swallowed it would just come out the other end after a while largely unaltered, bar some probably extra-stinky farts. And kids were dosed in victorian times with sulfur and treacle (this is even attested to in a charles dickens novel) as a way of reducing their appetite and lowering costs in food, as well as IIRC as a mild purgative in larger doses.
But sulfur is probably one of the less toxic elements around by far, if one excludes things that are utterly nontoxic, such as nitrogen (bar displacement of oxygen, which is not of course, direct toxicity, merely excluding something vital to life) and inert gases (although xenon is biologically active, and radon is of course radioactive). But there are no hazmat precautions required for dealing with elemental sulfur whatsoever, so little that my roll sulfur just sits on my lab shelves with no packaging, no gloves are needed to handle it, and about the only possible hazard would be from sulfur in a very, very, very fine dust form, that by virtue of its particulate nature could potentially be an inhalation hazard, but thats just due to inhaling fine dusts being a bad idea in general, especially insoluble ones. The only other danger, bar choking to death on a large lump of the stuff, or having a heavy, large sack full dropped on your head from a significant height, tripping over it and breaking your neck, etc. would be thermal burns from sulfur in the molten state.
Its just not a poison in the elemental state. And the sulfate ion in soluble form isn't toxic either, and is present in the body, reactive compounds are often detoxified in the liver, where glucuronide conjugation is not the sole, or not a metabolic pathway used for the purpose, as a sulfate conjugate. Magnesium sulfate (although relatively poorly absorbed orally, better so transdermally) is the common epsom salt used as a saline laxative. Intravenous MgSO4 is used for treatment of certain medical conditions, such as pre-eclampsia, and amphetamine sulfate is the commonly-used salt for preparing a suitable form for administration for amphetamine, due to the highly hygroscopic nature of the hydrochloride salt.
Sulfur and sulfate as a counterion have little to no toxicity. And sulfur itself actually has relatively little smell, it does have a characteristic odor, but it is both mild, and IMO quite pleasant. Plenty sulfur compounds, though, toxic or otherwise do have an unholy stench, dimethyl trisulfide for example can be detected for its odious rotting flesh-shitesque gutbusting stygian reek at a mere 2 parts per trillion in air, some fungi give it off, in a mixture of similar compounds, those known as 'stink horns' and if there is one about in the woods, you know it well before you see it, if you do ever see it. You can smell those things from a couple of hundred meters away, if hiking through a forest where there is a stinkhorn growing. Oxygen aside, all the chalcogens produce progressively fouler odors in their analogous compounds as a rule (E.g hydrogen sulfide smells like rotting eggs, pretty foul, hydrogen selenide is just unbearable, and even more toxic. Never had an encounter with hydrogen telluride and I really, really never want to, people exposed to Te and its compounds have reportedly killed themselves when tiny traces of Te were absorbed, and then metabolized over time to dimethyl telluride and similar noxious stinkers, the resultant 'tellurium breath' turning them into an instant social pariah, and in one case I've read of, someone doing Te chemistry at a uni, the textbooks they took out of the uni library could be told instantly as ones the poor bastard had taken out, since the tiny traces of volatile Te compounds coming out in his sweat, from his fingertips touching the book pages caused them to stink something foul. And there is of course, Shulgin's reference to that german chemist who dropped a vial of dibutyl telluride, breaking it, accidentally during a train journey. The entire carriage had to be scrapped permanently, since it could never again be rendered fit for entry.