Small shrub in the family Labiatae with a strong mintlike odour (5)
I believe the answer is:
thyme
(Other definitions for thyme that I've seen before include "one going to pot?" , "Aromatic culinary herb; sounds like occasion" , "Plant of the mint family" , "Part of song: ''parsley, sage, rosemary and . . . . .''" , "Aromatic plant" .)