afterdamp
aroma
aura
blackdamp
breath
chokedamp
cloud
coal gas
damp
definite odor
detectable odor
ectoplasm
ectoplasy
emanation
essence
exhalation
exhaust
exhaust gas
exteriorized protoplasm
fetid air
firedamp
flatus
flavor
fluid
fragrance
fume
malaria
mephitis
miasma
odor
puff of smoke
redolence
reek
savor
scent
smell
smoke
smudge
spoor
steam
stench
subtle odor
trace
trail
vapor
volatile
water vapor
whiff
effluvia
discharge
emission
Draco
cankerworm
dengue
deodorization
foetor
foulness
mycelia
oxygenator