It is concerning that you are using things like keyboard cleaner and aerosol to get high.

I'm not going to preach to you, I'm sure you know it is not something you should be doing. I would however like I inform you of the risks.

Most keyboard cleaners are non toxic. The substance in aersol cans is considered carcinogenic (causes cancer) and forms deposits in your lungs. In the short term it can cause cardiac arrhythmias. That is when your heart beats irregular. When that happens your heart can become damaged, locked in a fast pace or simply stop.

The fact that you "blacked out" seems to indicate that either you either had a cardiac arrhythmia or deprived your brain of oxygen. My advice is to go to an ER to have this evaluated. It may be over precautious but I don't want to suggest anything less. Sometimes, especially in younger people, you can "convert" yourself back to a normal rhythm. Sometimes you get locked into a rhythm and have to be cardioverted (shocked) back to normal.

Your local hospital can also get you in touch with mental health services who can evaluate your substance abuse and screen you for depression.