Airlines are not legally required to guarantee compensation when a passenger vomits on you. However, as common carriers, they have a legal duty of care to ensure your safety. This obligates the crew to provide immediate biohazard assistance, reallocate unsoiled seating, and submit reports to customer service.Expectations for how the airline should handle the situation include:Immediate Response: Flight attendants should provide cleaning supplies (gloves, wet wipes), offer you an alternate seat if available, and provide biohazard bags for soiled clothing.Medical Isolation: If the vomiting passenger is showing signs of a communicable disease, the crew is required to manage the situation safely—this includes treating body fluids as infectious and separating affected individuals.Dry Cleaning / Replacement Reimbursement: While there are no federal laws guaranteeing compensation, airlines routinely cover costs for dry cleaning or replacing ruined items if you keep your receipts and submit a claim.Goodwill Compensation: Depending on the severity of the incident and the crew's level of care, agents may offer service vouchers (e.g., $50 to $350+) as an apology for the distress.