I've experienced this a lot in the UK and in my opinion a lot of the stuff going around in the UK has been cut with speed or some type of amphetamine because when I first done beak the high was more of a confidence boost made you chat more etc but not rush hard but now a lot of this gasoline smelling stuff is making me pretty much rush hard as fuck like I'm on speed or something. From my early days in using back in 1999 the stuff didnt smell this way at all was cheaper and generally a much more enjoyable calmer hit which i only experience very rarely now a days so when it smells like fuel nail polish remover n so on i tend to take a miss. I also forgot to mention a family member is a scientist who works with narcotics and users and they are very well respected in there line of work. When I get them to get me stuff the smell is very faint almost like the smell of dirt but very faint and the purity is high ( of course as they know what's what ) i cant answer why it smells like gasoline but id deffo say something isnt right n like me id take a miss on that stuff if i was you always good to know what your putting in your body. I can't say it's bad because I don't know that as a fact I'm just weary. So have fun n stay safe lol happy sniffing my friend 
