gas grenade and gas mask

[000bny000]

two items which are contrary

gas grenade : a grenade that would produce a green smoke that would damage the player to remain in it
It could be kicked and cooked as a regular grenade
for a period of 7 seconds
Damage : 10 every 2 seconds

gas masks : to collect a mask of gas a green bar would be added under the stamina bar can stay under the vest bar as in the post "a new item : bulletproof vest" that represent the duration of the mask the more you stay within the smoke more you break the mask

the mask would you spend 20 seconds in the smoke before you start taking damage
I would basically go somewhere that is full of gas