I can remember flying some business people to Newcastle In a Seneca Five twin.
The air was silky smooth, not a ripple.
Suddenly one of the PAX a male!!! projectile vomited from one end of the aircraft to the other covering every visible surface.
This continued all the way to Newcastle and on exiting the aircraft he was fine.
Luckily for us the airline cleaners took pity and cleaned the aircraft for us.
On the return the same happened with retching all the way.
Thankfully this time there was nothing to wretch so apart from the noises all the way home little damage.
I refused to ever take that PAX again as he had serious motion sickness more in his head than motion!
Lokki
While relevant to Biz jets may have been better in the private pilots forum??
As for scaring the PAX I am all for immersion for fear control
I would show films like death at 30000 feet and every now and again going into simulated fits and collapse over the controls
Just think of the relief they will have when you turn around smiling
and tell them you were only joking!!
Pace