All the kink on this site and no one has stepped up to talk about Maximum Impact? I prefer ethyl chloride to poppers as those usually give me headaches and ultimately rob me of my erection - they are vasodilators - they open up your blood vessels. Ethyl chloride is sprayed on any fabric - a rag, sleeve, underwear - and you breath in the cold remnants of the spray. Doesn't happen immediately but maybe 10-15 seconds depending on how deep you inhale and how much ethyl you spayed, you will feel the effect. Totally different from poppers. Timing ethyl with sex is an art form, and once you cum with Maximum Impact you will always remember how amazing it feels.
All things in moderation. Start off slow and experiment. Cheers!