The bleach and UV light incident showed him up for what he is, a buffoon,
he said Disinfectant ,not bleach
we all use anti-bacterial mouth wash ,same principle ,if you could rapidly fill the lungs with a suitable antibac , then remove all of it and any excess mucus etc ,which i agree would be a technical challenge , it could work
similarly the use of UV light is effective to kill the virus ,BUT it must be UVC spectrum , i've been using UVC lamps for water treatment/purification for years ,very effectively
when they manufacture surgical masks, they use UVC to kill germs pre packing ,
unfortunately light tends to go in straight lines but lungs have many nooks and crannies ,making it difficult to implement
and exposure to UVC kills good cells too ,and gives you arc eye if you look at the emitted light
Trump was just putting the ideas out there , it's up to the doctors,scientists,inventors to brainstorm and fine-tune the ideas
disclaimer:
WARNING don't drink disinfectant while shoving a 4 foot long UV lamp up your bum