(Blipping the throttle accidentally should never cause an emergency unless other things are already going wrong: for example, if you are riding a bike whose power is way beyond your skill level or you are following someone too closely.)
My riding mower is tank-steer (zero turn)... pretty hard to use those skills on a car. But steering wheels basically work the same on all the equipment I've got with those; some easier to turn than others depending on geometry and power assist. The pedals are more likely to be different --- the mower has a friction lever on a panel to set the throttle / engine speed and levers you hold to go forward and back on right and left (so this does steering too); the tractor has similar throttle level, and then a pedal that you rotate to go forward or back with both wheels (all wheels if you put it into 4x4) and it has a splitable brake pedal if you want to brake on one side or the other.
But yeah; none of that makes it hard to go back and drive a car. Other than sometimes it'd be nice to do some tight turns at the expense of my tires if I could control each side individually.
The big difference being left hand leaver on a motorcycle is the clutch, rear brake is right foot, on a scooter, no clutch so the left hand leaver is the rear break.
When I first got the scooter I was expecting the obvious accidental muscle memory confusion with the left leaver when swapping vehicles. For some reason it just never happened, never accidentally gone for the clutch on the scooter and never accidentally gone for the rear brake on the bike.
As an avid mountain bike cyclist back in France, I hung to what seemed familiar - which worked well enough until the first sharp bend came... It came way too fast, I panicked, cycling reflexes took over, I shifted my weight back and pressed both handle levers hard - getting the (to a cyclist) very unexpected result of both disengaging the clutch and thus losing all engine braking while locking the front wheel hard (why did they put the front break where the rear, which helps me control slides, is supposed to be ?)... I was catapulted, followed by the bike... Nothing broken - just bruises, rashes and the flattened ego of a lucky idiot.
As a daily cyclist, being a motorcycle passenger on big engines always terrifies me: I'm on two wheels, with bicycle-like positions and trajectories... But everything happens monstrously too fast, my instincts for braking and acceleration are all out of calibration, so I always feel that we cannot possibly survive the next turn !
So, yes - I recommend not mixing bicycling and motorcycling.
Then your bicycles brakes have been put back on the wrong sides (is home maintenance by a previous owner to blame?).
The front brake should _always_ be on the right. Just like a motorbike.
EDIT: Correction. It appears US and UK bicycles have their brakes on opposite sides. How bizarre!