What does the cryptic crossword clue "Maybe attaché provides a clue for B.O.? (9)" mean?

The wordplay uses a deletion. BRIEF (synonym="BRIEF") + CASE (synonym="CASE") = BRIEFCASE The answer is BRIEFCASE.

Maybe attaché provides a clue for B.O.? (9)

Guardian Cryptic #29412 | 11 Down | 2024-06-18 flower