I am sorry the OP had to experience this. What Emirates should have done was to bring a doctor from the Changi Raffles clinic to the plane and if the passenger was fit to fly based upon his assessment allow the passenger to fly. In the time that it took to get the bag off they could have a doctor meet the flight and give the assessment onboard checking vitals, blood pressure and temperature. Clearly Max did not have a temperature.

Why couldn't the crew ask for a doctor or nurse onboard who could have opened the medical kit and check for a temperature and vital signs? Offer water? This was done behind your back and you could ask for more money for the humiliation.

Clearly this could have been handled better. And the captain should have been more gracious with you. I would be very upset that Medlink did not even ask for your son's vital signs? How could they make an assessment without checking vitals? Ginger Ale and Ginger Candy could have helped instead you were forced to pay to go to a medical clinic for a Fit to Fly certificate?

Wait one minute if there was severe turbulence other passengers who are prone to the motion would be vomiting? Why do they provide air sickness bags? Emirates overstepped the boundaries. Would they ask the entire aircraft to be checked out at Raffles if there was severe turbulence?

Its just like me calling an ER and asking for a diagnoses over the phone they will not give it to me as vitals need to be checked. Clearly the crew should be trained about motion sickness. Your son had all the vital signs and went to the toilet to vomit.

I as a kid had motion sickness oddly never on a plane but only in a backseat of a car on a curvy row. Interestingly we were on a Oakland CA-Paris flight on a French Charter and over Greenland we had severe turbulence my brother vomited and I handled it well. The flight attendant knew it was due to the motion and offered water and soda water and helped my brother after.