DH is a paramedic and insists his uniform is perfectly fine at 40 degree wash. We use Fairy non bio detergent. Should it be 60? I’m concerned he’s going into a lot of sick people’s homes but I suppose on the other hand a lot of medical emergencies are not infectious. I suppose there are germs and so on in nurseries, schools, supermarkets… What would you say, 40 or 60 degree wash?