Yes. The air above the sea and along the coast does contain salt. On average, the concentration of salt in sea air is about 3.5 million parts per cubic foot (100,000 parts per cubic meter). Salt air can penetrate inland up to thousands of miles, depending on wind and air pressure conditions, and can aid in the formation of clouds because the salt particles serve as nuclei around which drops of precipitation can form. Haze along seashores is also the result of salt particles, with haze droplets typically forming when the humidity level reaches 75 percent or more.
Pollen for a wide variety of plants fills our atmosphere, sometimes causing allergic reactions in people.