Hi
I take bottles of milk that I made up at home, and just ask the flight attendant to heat the bottle up for me. ds does not like cold/room temp milk. Have not had any problems. From the UK to here, they do ask you to taste the milk.
I usually take one bottled of boiled water, and add the powder when i need it and just ask the emirates staff to warm it up for me. Also, the ready made cartons are very handy - so worth checking them out.
I am due to fly in 4 weeks back to the UK with emirates and I am formula feeding my son. I normally pre make my feeds and store in the fridge or when I am out I take cooled boiled water in a bottle and add formula when needed.
What do you do when flying and making up a bottle?