My older son has broken out in hives and rashes. I thought maybe it was the new scent boosters I was…

My older son has broken out in hives and rashes. I thought maybe it was the new scent boosters I was using since it just started right after I bought them buuut as I started washing his laundry I realized the detergent itself is a different scent than I normally use too. I already threw in the new detergent so I’m going to have to pick up some washer cleaner and then re wash these clothes again in our usual detergent.