Sniff test

I had some friends in high school I used to tease about the sniff test. In that scenario it was leaving all your clothes on the floor and sniffing one for cleanliness. Weren't we gross back then? I hope they dropped that habit now...The other day though, another kind. I saw something in the middle of my floor, and as a natural reaction I picked it up to sniff it and determine what it was. Cat barf. I almost added to the pile I now saw with my own after sniffing it. I determined that people with pets and kids, must have long ago abandoned the natural reaction of sniff test.