Make sure if your inhaling the ether or using it for drinking, that its free of peroxidation inhibitors, drink only diethyl or diisopropyl ether. these haven't done me any harm.
Check diethyl ether for peroxidation at least once a year pref. twice, check THF every 6 months, check diisopropyl ether once every 2 to 3 months, diisopropyl ether is a monster for peroxidation and it generally speaking sucks ass for it, although a very useful solvent, good for extracting polar compounds from polar solvent solutions, but being a '2 ether with the secondary carbon next to the oxygen bridge, this is a hallmark of ethers prone to explosive peroxidation, pref. buy what you need and use it, or buy enough for a couple of reactions, use it and get what you need just before you use it if you want to be supercautious about it.
But diethyl ether, whilst flammable isn't too scary, storage with a few twists of bare copper wire in the cans can help it not peroxidize. Test for peroxides with strips of filter paper soaked in a solution of starch and potassium/sodium iodide, the intermediate hydroperoxides and ethylidene peroxide from diethyl ether, isopropylidine peroxide from iPrOiPr etc will oxidize KI/NaI to I2 which then reacts w/ the starch to blacken it or go blacky blue if peroxides present, if they are then treat the ether with some triphenylphosphine and copper wire, then distill from that. Never, ever, ever ever EVER distill pots of ether to dryness, doing so concentrates any peroxides formed, and if there are any, they can form in the threads of screw cap bottles/cans from the ether vapor seeping into the threads, old crusty bottles of ether must never be opened, not ever, not once, not for any reason, but should be taken out to the middle of nowhere and shot from long range with a rifle, or taken to EOD specialists if needs be and you can get away with it, but in practise for a home chemist, risking handling the bottle must be done, avoid being busted, or having the filth start asking questions that need not to bee answered. Ether isn't scary it just needs respectful handling and use.
I sparge mine with argon when I buy any, to degass it from O2, and keep a protective pad of argon over the top to further help assist inhibition of peroxide formation. Inhibited ether is less than ideal for drinking, fine for almost all chemistry purposes, but not so good for ingestion, needs checking less frequently than ethers sans inhinitors aren't to be scared of exactly just need great care in their use and storage, respect them and you should be alright. To free from peroxides they can be distilled over potassium once dried and anhydrous, distill over fresh, peroxide/superoxide free, shiny new potassium r sodium metal. Lithium or the slower reacting, less violent calcium can be used too, do it only under inert gas flow (argon usually, nitrogen can be used with all the alkali metals save for lithium which forms lithium nitride, a powerful superbase. CO2 cannot be used for it is protic, and will form carbonates with alkali metals, N2 is cheaper than argon, but cannot be used for lithium, for the stated reason. Argon is a little more expensive but disposable tanks are cheap from welding supply stores. Nitrogen can be used for MOST inert gas purposes, but not for lithium metal as it forms said lithium nitride. Which of course can be useful in its own right....