Answer; Burning of Monitor kit, UPS and inverter battery
Your question is about the consequences and possible protections in context of the burning of monitor kits, UPS and inverters which your friend is doing.
Burning electronic parts is way too dangerous and the wrong process. It must not be done because it produces so many harmful toxins that your friend has no chance to fully protect himself. The toxic smoke and gases cause problems for the eyes, skin, lungs and immune system which lead to poisoning and cancer.
In industrial settings, nobody burns any parts because of that. Burning destroys valuable elements or lowers their quality and thereby decreases the price fetched. The only way is to take the parts apart manually, check if they are still working and selling them.
Advise your friend to immediately stop any burning activity and change to the manual dismantling of keyboards, phones, motherboards or wire stripping. While doing this, he must wear a head cover, dust mask and gloves, change into working clothes and take a shower when returning home.
As soon as possible, he msut go for a check-up in a nearby hospital. He shall ask, what diet will be helpful in his current condition. Check up in these hospital is free of cost
– Government Hospital, A-8, Street No.2, Bhagat Vihar, East Sadatpur Extension, Karawal Nagar, Delhi, 110094
– Veer Savarkar MCD Hospital, East Karawal Nagar, Bhagat Vihar, East Sadatpur Extension, Karawal Nagar, New Delhi, Delhi 110094
– Dispensary, Brij Puri, New Mustafabad, Delhi, 110094