Ammonia

[caterpillar5]

I just took a whiff out of my ammonia source used for my first fishless cycle!! and WHOA!!! I would not recommend anyone doing this... so STRONG!

 

[K-Holed]

LMAO Feel the burn!

 

[Jae1525]

You can collapse your lungs doin that!

I wouldnt sugest you do it again.