Yes it does. You would never know though. I have asthma and I have an infant and a 3 year old we were there several times and spent the whole day and were not bothered by it.
As of 2nd week of March 2018, yes it has affected Clam Pass. Once you get near the beach everyone starts to couch from the red tide. Once you walk or ride down the boardwalk a few hundred yards it stops almost immediately.
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