Josh Ostroff had a difficult choice to make: Cancel a trip to Japan in March that he¡¯d been promising his 10-year-old son for three years, or ignore travel warnings and put his family¡¯s health at risk amid the coronavirus outbreak.

He decided to cancel the trip.

When the family from Toronto asked for their money back, citing the Canadian government¡¯s warning to ¡°exercise a high degree of caution¡± in Japan, they received a refund from their hotels and a voucher from the airline. Airbnb Inc. said no.