Amyl Nitrate is more commonly known as Poppers.  Poppers come in small bottles which pop open - hence the name.  They are filled with liquid chemicals called alkyl nitrites. They were used at the turn of the century for people suffering from chest pains. Nitrites like Amyl Nitrite dilate the blood vessels and allow more blood to get to the heart.

They are usually sniffed straight from the bottle and deliver a short, sharp high. Poppers are sold in sex shops, clubs and gay bars.

• An initial head rush that lasts a couple of minutes.
  

• Sniffing poppers during sex can make orgasms feel like they last longer. And some people say it makes their sexual organs feel massive.
  

• May help relax anal sphincter muscles.

But there is a flip side:

• The effects don't last long and can leave people feeling sick, faint and weak. Especially if taken while dancing.
  

• Some people say they have trouble getting an erection after sniffing poppers.
  

• Poppers can give you the Mother of all headaches.
  

• Some people get a rash around their mouth.

• Poppers are toxic and can kill you if you swallow them.
  

• Taking poppers is dangerous for anyone with chest or heart problems, anaemia or glaucoma.
  

• It's very dangerous to take poppers with viagra or if you're on medication to reduce your blood pressure as it can cause it to drop so low it is dangerous.
  

• Don't get them on your skin, poppers burn.
  

• They are highly flammable.