Despite washing my shirts, the area around armpits still keeps the odour- any advice?

I tried everything, kept my clothes for hours in washing powders but nothing helps. How do you guys deal with this?Despite washing my shirts, the area around armpits still keeps the odour- any advice?
if they are good quality cotton shirts put them on a boil washDespite washing my shirts, the area around armpits still keeps the odour- any advice?
there's nothing you can do to that now.when caring for your shirts next time,make sure you're wearing roll on and avoid sweating too much in that area.you can carry wet wipes with you all the time if you're the type that sweats a lot on the armpits.
use spray n' wash or shout
first, find a decent antipersperant, not a deoderant. then you shouldn't have the problem as bad. but if you soak your shirt overnight in salted water then put it in the laundry it should do the trick.
Try vinegar and water, but, try it on an old shirt you don't wear, in case it doesn't work, or, ruins the fabric.
Soak in ';Oxyclean';.
You might try putting some vinegar in the rinse water. It's very good at removing odors.
Use bleach or color safe bleach.
1 cup of vinager to every washload and your problems will be solved.