Wondrous Item, Uncommon
A swinging censer of pierced chitin housing a living bellowscap that exhales clean air when kindled.
Sweet Air. While the censer is lit and carried, it fills a 10-foot-radius sphere centered on you with fresh, breathable air that moves with you. Within this sphere, Deadair and mundane suffocating vapors are held at bay, and each creature has Advantage on saving throws against inhaled spores and gases. The censer burns for one hour before its bloom must rest a day.
Source: Sporebound