Alchemicowl

This crow-shaped mask looks to have a pair of goggles affixed to it, and has a pair of valves that stick out from the sides of its "beak".

While wearing this cowl, you can use an action to slot-in or replace a potion bottle into one of its two valves. While at least one potion is inserted, you can use a bonus action on your turn to aerosolize one or both of the slotted potions, which is then imbibed. If a potion has a duration, its duration is doubled. If the potion does not have a duration, then it is instantly applied.

Gas Mask. You have advantage on saving throws against spells and effects that deal with gasses, such as a gas-based trap, or a Cloudkill spell.

Notes: Advantage: Saving Throws, Buff, Utility, Headwear