This is not a coincidence but a well-planned strategy of the railways. Let's see the reason behind it.
Indian Railways operates a large number of trains on a daily basis, and thousands of bedsheets and pillowcases need to be used every day. These pillow covers and blankets are provided to passengers in AC coaches.
Used blankets are collected back for cleaning. Special machines are used to clean these blankets. That is, these bed sheets and pillow covers are cleaned by special machines equipped with large boilers that generate steam at a temperature of 121 degrees Celsius. The bed sheets are subjected to this steam for 30 minutes, ensuring that they are completely disinfected.