Vomit.

I keep smelling vomit in my apartment tonight.
It comes in wafts and is rather pungent.
I know I have not vomited.
After a thorough search, I have come to the conclusion that it was not the cat either.
Is it possible that it's coming from outside?
But, I am on the second floor.
And my windows face a sketchy alley.
Was someone vomiting out in the alley so much that the smell could waft up two stories?
Gross.
I almost hope it was the cat.