Smoke or mist
Else clues• ___ trail
• Clouds, e.g.
• Cloudy diffused matter
• Contrail content
• Contrail's makeup
• Exhaust, perhaps
• Fog
• Fog or mist
• Fog or steam
• Fog, e.g.
• Fog, mist, or steam
• Fume
• Gas
• Gas you can see
• Gaseous mist
• Haze, essentially
• Humidifier emission
• Humidifier output
• Inhalant
• Jet trail
• Kind of trail
• Kind of trail or lock
• Largest greenhouse gas, with water
• Like Jeanie's hair
• Miasma
• Mist
• Something in the air
• Steam
• Steam or mist
• Steam, e.g.
• Steam, for example
• Trail type
• Type of trail
• Visible gas
• Water ___
• Water in the air
• Word with lock or barrier
• Word with lock or barrier
• A visible suspension in the air of particles of some substance