Masturbating with sniff *****

I'm wearing full heavy rubber with a gas mask and filter. But than I decide to change the filter for a sniff *****. The ***** is connected with the gas mask by a long tube. There are only a few small holes in the ***** which allow me to breathe. The further I enter the ***** inside of my ***** the less I can breathe. So I need to choose between breathing and satisfying my needs for sexual pleasure. I can smell how wet and ***** I am because the air I breathe is literally going my *****. I'm going more and more into it and finally reach a few strong and intense *******. This is rubber heaven to me.