BO in my favourite cashmere jumper

[user1494670108]

I wore it to travel in and had a long delay on a very hot plane.
I have washed it twice with woolite but a faint whiff remains, what can I do?

Try washing it again with a few drops of detergent and some distilled vinegar. Rinse well and dry outside.

I’d slosh a bit of white vinegar under the arms and wash it again.

White vinegar here too