Airlines often reuse blankets and pillows
Yes, that blanket you're sleeping under may not be so fresh. Some airlines reuse blankets and pillows on flights, according to Quora user Tony Busko and ex-flight attendant Fatihah Sudewo.
"The blankets and pillows get reused over and over again. They just fold em [sic] up and put them away for the next flight," Busko said.
"It depends on how cheap the airline is, but I've had my share seeing them [the cleaning team] refolding the blankets for the passengers on the next flight to use," she wrote. "At least they were generous enough to replace the pillow covers and the headrest covers."
The best solution, according to Busko, is to ask for a new blanket in a plastic bag.