I was close to a self immolation once. Long ago. 18 yrs old, Amherst MA. Happened in center of town. Guy set himself on fire to protest Iraq invasion by US. [of course it was suicide].
Before I knew about it, there was a blue hazy smoke that wafted across the campus (Hampshire College) and the sickly sweet smell of honeysuckle.
Oddly knew what it was ’cause a TV show on “spontaneous combustion” taught me as a kid what it was like, so when the report of what happened came to us a few hours later, I was like, “I KNEW IT!”. I was a smartass.
But really, it was a grossly sweet smell.