smell buds

Like your taste buds, but for the sense of smell.

Erika: 'Do you think it smells like sausage in here?'
*Julie sniffs the air with her smell buds*
Julie: 'No. My smell buds must be off today.'

Smell a bud

Means if you’re tryna get some weed.

“You tryna smell a bud?”
“Course”