[ashtonkem]

Humans exhale all kinds of stuff aside from just CO2, including moisture and other metabolic byproducts depending on what you’re eating. Probably some bacterial metabolic products from our mouths too.

I guess I’m less into the semantic difference between “smell” and “detect” and more whether it’s the CO2 they’re following or something else we exhale regularly.

[vmception]

Yeah I’m curious too, I think thats the right direction to research