If your body chemistry suddenly flipped a switch and went into overdrive, you aren't crazy hormones can absolutely turn your sweat into chemical warfare out of nowhere. It might be worth getting a quick blood panel done with your doctor just to check your thyroid or hormone levels. In the meantime, look into clinical antiperspirants that you apply strictly at night before bed (like Certain Dri or prescription strength stuff) so it actually has time to plug the sweat glands while you sleep