https://thenextweb.com/gaming/2019/07/30/call-of-duty-modern-warfare-white-phosphorus/

Call of Duty: Modern Warfare is adding a few goodies to reward players who maintain a killstreak — one of which is the deadly white phosphorus. As you might expect, the addition of the horrific chemical agent as a prize for good play isn’t sitting well with everyone.

Activision revealed today that killstreak rewards are back, and they include the usual buffs — armor, tanks, and an area-of-effect smokescreen. The latter is apparently white phosphorus — the announcement also mentions that it’ll harm anyone who gets too close. Purely from a gameplay standpoint, it sounds like a good way to control various parts of the map. And it is sort of realistic that it causes lingering burns, though that’s not necessarily a good thing.