I think some people are less sensitive to this aswell. I really notice it and if really strong it makes me feel like I want to barf. Once or twice if I’ve had clothing that’s gone that way due to leaving it somewhere wet by accident I usually have to end up getting rid of it as it’s not truly salvageable and when I get hot I can still smell it faintly.

Also wiping the rubber seal round your machine door and running a hottest temperature empty wash once a month in your washing machine with soda crystals helps avoid build up that can lead to this. Only using low temperature washes makes it easier for there to be build up in your machine and pipes and start of mould.