汗あせ臭くさい

あ

せ

く

さ

い

Meanings

1

i-adjective

smelling of sweat; sweaty-smelling

Describes a strong, unpleasant body odor from sweat. Often used for clothes, rooms, or people after exercise.

汗あせばむ
汗ばむ means 'to be slightly sweaty' (verb), while 汗臭い focuses on the smell.
臭くさい
臭い is a general adjective for 'stinky', while 汗臭い specifically refers to sweat smell.

Compound of 汗 (あせ, 'sweat') and 臭い (くさい, 'stinky'). The reading くさい becomes ぐさい due to rendaku.