Toxin Filters

Wondrous item (technological), common

Toxin filters use alchemical or mechanical devices to screen dangerous pollutants from breathable air.

Locathah use modified filters to explore potentially dangerous regions underwater, but many aquatic creatures employ them in various forms. Regardless of the technology involved, toxin filters give you advantage on Constitution saving throws against inhaled poisons. This bonus only applies to the first save attempted for any given poison.