Any proof of this????
One of the earliest vehicles I know of with a snorkel was the Austin Champ - designed to be capable of deep wading. All breathers were vented to the snorkel and the electrics were sealed/pressurised.
Austin Champ
http://www.ebroadcast.com.au/ecars/M...37/Champ.F.jpg
I think you are confusing snorkels with the fresh/cold air intakes which the "tuning" crown fit to their silvias and golfs.

