This is reading to me more like intrusive thoughts, than flashbacks; which have different coping skills.
(There’s no one is worse that the other, with these. Intrusive thoughts can be so profound a person will kill themselves, &/or hit psychosis/insanity/madness, whilst flashbacks can be mildly annoying, at worst. Why the hell are my neighbors BBQ’ing sewage?!? Oh. Blink. Blink. They wouldn’t be. Well there goes my last 2 days of smelling smoke! Stupid damn flashbacks. Roll eyes. And? Vice versa. They’re just 2 different things. Both with their own scales of mild to severe to brutal as fawk.)
Are you REMEMBERING or RE-LIVING?