Hmmm, how to describe it?
The smell can range from alright, to foul, but once you get the vapour into your lungs, you're starting to feel feint, your whole body becoming fuzzy and dunno.. relaxed or something, your heart is beating faster, and your head is spinning. And your ass is totally open, if I should use that kind of an expression. Take a decent sized dildo (or cock), lube it up good, and you'll see how easily it just slides in while you're sniffling the poppers ^^ Now, if you try it with a popper mask or something like that, be prepared to hold onto something... cus then you're truly gonna feel feint, and in need of lifting your ass up and take whatever you can get xD