Manufactured homes are safe. For example, the HUD building code requires smoke alarms (hard-wired with battery back-up) and egress windows in all bedrooms, carbon monoxide alarms, and the use of non-combustible materials in potentially unsafe areas like the furnace and kitchen.
Manufactured homes are also designed to withstand very high wind speeds from 80MPH to 110MPH (in coastal regions) minimum. The requirements of strongly enforced building codes ensure that modern manufactured homes are as safe as possible.