Believe me the CAA is really not interested in the Fumes issue.
They are on the side of the manufacturers and airline management and dont care about the health of the pilots.
They know that if it is accepted that fumes are harmfull this will cost too many jobs and money!
as for putting it in the book ,the company keeps telling us ,stop reporting it ,fumes are normal after start up ,during taxi ,after take off ,top of decent and during taxi in!
very wise advise if you ask me!
Neil