Answer: secondhandsmoke

AnswerCrossword Clue
SECONDHANDSMOKECigarette side effect
SECONDHANDSMOKEPub hazard, in some places
SECONDHANDSMOKEIt exists only after it's expired
SECONDHANDSMOKEHealth hazard from cigarettes
SECONDHANDSMOKEWhat relit cigars produce?
SECONDHANDSMOKEEPA concern