Melee from a teammate.

I was thinking that too but I can't think of any way to counter it in a fair way X)

I think if you stop moving it should burn slower and dissipate faster. That way if they burn and chase you, you have to run and get the full effect. This would also make them have to capitalize on throwing a grenade in a room. But those random grenades won't kill you if you run and get to a corner to let it do it's thing. This would also extend to every burn grenade/melee. This would also help with if you kill the person that burned you, then you have the opportunity to stop the burn unless you have extremely low health.

Running should slow the burn because wind

Wind fuels fire bro -.- More oxygen - bigger flame - hotter fire That is why we blow on fires when we start them ;)