Smelly - pungent or herbal
Catnip leaves are strong smelling if crushed. Some cats seem to experience a "high" and act a bit silly like Moe (orange tabby). Other cats like Mindy (white/grey tabby) are unaffected and simply eat it. The potted plants in the picture are catnip seedlings, of course.

Smelly - foul (very)
Another plant, this one is a member of the mushroom/fungus family and is called a Stinkhorn. Found two of these growing in the lawn. Trust me you don't have to search for these, their disgusting odor makes their presence known. Need a good frost to get rid of them!
