How come some people can be so lum nua/smelly

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And actually dont feel it ah

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I in mrt see this guy looks like some ah tiong or those heck care type of people then can smell his breath and BO

[Arctic]

I buibui also have smelly cheese under my skin folds

[No Guessing Game]

And actually dont feel it ah

The persons with BO/bad breath won't be able to smell their own odors.

[Magical Fingertip]

 why chao bharats have bo = racist . Chinese have bo = lum nua must watch hygiene