Long-serving LA snapper, Mark Karloff, said attempting to escape the city’s ruthless press hounds would be “dangerous”.
Harry’s mum Diana, 36, famously died after a horrific car crash in Paris in 1997, during which she was being driven at high speed before smashing into a tunnel pillar.
An inquest determined she was unlawfully killed by the “gross negligence” of driver Henri Paul, who was drink-driving as he tried to shake off snappers, and the paparazzi.
And Karloff, who has been snapping celebrities for 12 years, urged the Duke and Duchess of Sussex to avoid escaping cameras or they could risk a similar crash.
The Paparazzi Podcast told Daily Star Online: “Depending on how their security is, depending on how they drive themselves, it could end up for better or for worse.
“Fleeing is just a primitive way of handling the situation. We’ve all kind of evolved, and they obviously know what happened to his mother in that situation.
“I think we all have crunched the data when it comes to that situation.”
He added: “Any time a celebrity decides to run from photographers, depending on who they are following them, it could get dangerous.
“Not just for them, dangerous for the general public as well. So it’s not just their lives I would worry about, even down to the photographers’ lives, but who really cares about them?”
Before dramatically stepping down as a senior royal at the start of the year, Harry continued to lash out at the press.
He said in an interview last year that he would “not be bullied into playing a game that killed my mum”.
Karloff said Diana’s death remains notorious and commonly spoken about among the paparazzi.
He continued: “Diana is spoken about all the time, there are plenty of times where people refer to that situation when they are referring to us, the general public or even celebrities.
“It happens more times than you would think, even back then I remember thinking to myself logic here, if they weren’t running from the photographers here then they wouldn’t have been in that situation in the first place.
“It’s not like they hunted her down on purpose, chasing her down to cause damage. It is a photo at the end of the day.”
He added: “These followings can get dangerous.
“Cause and effect, I like to say, if everybody would kind of abide by the rules and they would get to where they need to go safely.”
Since moving to LA, the duo have been the subject of intense paparazzi interest.
Daily Star Online even revealed that a drone had been spotted hovering above their roof in a possible bid to watch Meghan sunbathe.