It hit without warning. One second she was breathing just fine the next....she couldn't get enough air.
Eyes tearing up and her lungs trying to heave themselves out of her mouth, she quickly and hoarsely excused herself to the next room, desperate to find a water fountain to get a drink, to do whatever she could to get whatever irritation that was in her throat gone so she could see and breathe properly.

-Inspiration from a random coughing attack at work.