John Wesley Jayakumar Member Member since Jul 19, 2018 Last active Jan 12, 2019 Total activities 0 Activity feed Recent contributions #Threads 7 years ago d6e83f62-5b37-4cc3-a927-d985d204afac 1 Maybe we can use some chemicals which absorb the harmful gases . Chemicals like zeolites , platinum which absorb black smoke...
