You couldn’t have googled this?
"During boarding of flight 2066 from McCarran International Airport (LAS) to Raleigh-Durham International Airport (RDU) last week, two passengers told the flight attendants that vomit was present in their seat area. The flight attendants apologized and immediately invited the mother and her teenage daughter to move to either end of the plane so that the seat area could be cleaned. The mother and daughter were also told that once boarding was complete they would be provided other seats if available. The daughter was also offered cleaning products and invited to use the lavatory to wash up. The mother was unsatisfied with the response and became disruptive. As a result, the flight attendants determined that the mother and daughter should be deplaned and accommodated on another flight. The mother refused, and following procedure, law enforcement was called. Law enforcement then requested that everyone deplane so that the mother and daughter could be removed allowing the aircraft to be re-boarded and depart. We apologized to our passengers for the inconvenience caused by the departure delay. The safety of passengers and crew is our top priority at Frontier."