Would just leave it as is mate. What i would be more concerned about is who let you spray with just a charcoal filter mask on. They never heard of isocyanate poisoning and occupational asthma ? Not having a dig as you might not have known as im guessing you an apprentice as you look young in the pictures but can be very dangerous and can sensatise you at any age then it will be a short career as even aerosols will leave you breathless.