[_Microft]

AMOS-6 suffered from a problem with a Helium Composite over-wrapped pressured vessel (COPV) that most likely had a liquid oxygen intrusion into the composite layer which due to the cold temperature of the helium created oxygen ice that violently reacted with the composite when friction ignited the combination. (Fun fact: as far as I know a liquid-oxygen drenched cigarette basically explodes when lit).

Afaik there is no Helium COPV on Crew Dragon.

Edit: after checking because of Someones comment, it turned out that cigarettes do not explode when drenched with LOX, they just burn brightly not unlike a flare.

[Someone]

”a liquid-oxygen drenched cigarette basically explodes when lit”

Doesn’t seem to be true. At the least, that’s isn’t guaranteed. https://www.youtube.com/watch?v=t48QWjtoVfw