This is a pure rumour! I bet you work at Emirates, a few flight attendant came to me with the same question. There is no problem in take a shower after a flight.
It depends how long it takes you to shower
Expect it to take around 16 hours. DC to Rome, 6 hours. Rome to Addis Ababa, 7 hours. Addis to Kigali, 2 hours. Long haul flight, for sure. Not so much fun.
8 minutes
The duration for training to become a long haul truck driver will depend on what qualifications the driver is wanting to learn and qualify for. There is training for haulage of hazardous waste as an example that would require more time. In general the training should take a few months and then one would have to achieve a license in order to drive long haul.
Dogs usually don't take showers. When their human bathes them, the human decides how long the dog should be in the bath or shower.
If it is a direct flight it will take about 12 hours.
if you take direct flight, it takes about 10hrs.
You can take one for as long as you want, provided you can stand it and have enough water of the desired temperature and supplies to do so. You won't want to take a very long shower because you'd have a very high water bill. Realistically, a 15 minute shower is usually sufficient.
it depends on the flight you take!
it is not normal... it is gross if you don't take a bath or shower for a long time because you will smell and be gross.
2 hours and 40 minutes.
The flight should take you 9 hours.