Dont know any people thats allergic to mct oil.This could be bad gear mixed with harsh solvements to give you irritation.But i cant judge i dont know your sources
Im old now but back in my brew days all i ran was a glass filter kit with 50mm membranes.Run the 0.45um first then 0.22um for clean goods.Sterilise your vials!Get yourself a little vacuum pump its cheap and save you lots of headache.All the best sir and always remember not to cut corners,your...