i really don't think kerosene is good for the skin. this is a hard one to answer. flood waters carry bacteria also from sewers and dead animals. it might not just be athletes foot it could be some kind of infection. i don't know what is available in the phillipines medicine wise. there is a topical blue liquid called gentian violet that kills both bacteria and fungus but the foot would be blue for a while. you have to apply this once or twice a day. there is also miconazole 2% cream, clotrimazole 1% cream, spray, liquid, that are over the counter in the us. stronger stuff we need a prescription for, ketoconazole, econazole, nystatin, and others. the men need to keep their feet dry. i don't know how to do that other than boots. tea tree oil is very good for bacteria and fungus too. i hope i helped.