Green’s Dictionary of Slang

mowly adj.

(W.I.) smelly, malodorous.

1995

Francis-Jackson Official Dancehall Dict. 34: Mowly offensive odor: u. g’wey, you smell too mowly.

In compounds

mowly-aam (n.)

(W.I.) body odour.

1995

Francis-Jackson Official Dancehall Dict. 34: Mowly-aam rank body odour.