Clue | Source | Date |
---|---|---|
Aid in clearing the air | New York Times | 20 Jan 2017 |
Aid in clearing the air | ||
Waste-product hobbyist? | USA Today | 13 Nov 2016 |
Ventilation aid | ||
Ventilation device | ||
Ventilation aid | ||
Cooling device | ||
Cooling device | ||
Ventilation device |