The first question was, "Do you believe humans can spontaneously combust without a source of ignition?" As you can see here, responses are pretty split. There's an even amount of people who believe it's possible, think it isn't possible, and undecided. This shows that there is not a whole lot of information about spontaneous combustion out there, so no one really knows what their opinion should be.
The second question was, "Have you or a loved one randomly burst into flames?" Luckily, most people (61%) have not experienced this. However, there was an unlucky 14% who have claimed that they've experienced spontaneous combustion first (or second) hand. 23% would rather not say anything.