Look, you don't have to start a thread like this in order to tell us that you've caught fish and (rub it in why don't you!) that they were big enough to FILET!!
Whatever you do DON'T use a barrier cream unless it contains ULTRABITE, or you've got someone else to bait up for you! (Mind you perhaps there are barrier creams that really do attract fish) We've been told about SILENE, that dreaded human anti-fish odour that we all produce (I suppose Southies are human??) but it seems that anything odd smelling might bring on an attack of the blanks (whatever that is!)
Those with tender hands might use, or perish the thought, ENJOY, the touch of LATEX!
Otherwise, start the cleansing process before you leave the beach by rubbing your hands in the water with some sand. Nicely abrasive it will pull off the ingrained fish/bait smell along with a couple of layers of skin cells. If like me you fish near nice STINKING BLACK OOZING MUD, use that. Not as good as sand but the smell will mask anything! (Knew a bloke who did this after he'd been with another woman. When he told his wife the truth, she said, "Lies all lies, you've been bl**dy fishing again, haven't you?")
Seriously, if its only the smell of fish after filleting at home then straightforward scrubbing with soap (I crave for carbolic, though Pears takes me back!) Actually I never have the problem as I return everything (how many Browny points for that one?)
When we take her mother away for a holiday (always by the sea, by the way, funny that) I always sprinkle Ultrabite liberally under her seat in the car. Makes a great talking point!