"If you don't have a temperature, there's nothing to worry about". There is, if you don't have a temperature you're DEAD!!
Don't ask for trouble by boozing at the airport before you leave or on board, loads of time for that AFTER you've got into the country. They still had a scanner when we got there on 16th.
Drink PLENTY of water from now right up until you take off, and continue on board. Take 2 paracetamol 5 hours before you take off and 2 more about 30 mins before you land.
Tamiflu doesn't get your temperature down,
paracetamol does. Tamiflu is only intended to stop the virus spreading through your body.