I may have inhaled a lot of raid mosquito spray and now i have a dry cough that won't go away with cough syrup. what medications do i need?

Raid is the problem: The raid spray is irriating your mucous membrane from inhalation, and if gargling with saline rinses don't help, you can call the poison control center (for your state), and they will give you antidotes. Don't believe that cough syrup will work, as it's primarily sugar with some expectorant. Don't delay, so you can start feeling better.