We should always follow the guidance about the safety of going to the water. Avoid entering bodies of water that have a distinct foul odor, appear discolored, or have foam, scum, or algal mats (sheet-like accumulations of blue-green algae) on the surface.
To bad if you are already in the water and it is late that you know about the spreading. In that case, is it enough to wash your body thoroughly with soap and water?
When you think you are not that affected yes. If you experience symptoms from breathing red tide toxins usually include coughing, sneezing, and teary eyes be it temporary, wearing a particle filter mask may lessen the effects, and research shows that using over-the- counter antihistamines may decrease your symptoms. If it is still consistent, go to the hospital or call a Doctor for help.