I'm starting to worry

I sat down on the train this morning. I thought it smelled like piss. And when you're on the train and you think that you smell piss, it's probably because you're smelling piss.

Then I got to work. I settled in, settled down, and started working. Something smelled like a litter box.

I'm worried that I just kept smelling myself. I'm worried that there was something on my person that stunk of human waste. I'm worried that I'm the smelly kid in class.