I find that Rhys' wee smeels REALLY bad when he's teething. Very very strong. If you don't have a rinse on your machine (we have an indesit moon which doesn't have anything other than a 30deg wash, a 30deg delicates wash, a 40deg and a 60deg) could you maybe put on an extra was at the end using whatever is your coolest shortest wash and just not put any detergent in? Also what detergent are you using?
ETA: we find that teething can affect his wee for just 1 day and then suddenly everything's back to normal.
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