Jet Lag

[idahoblues]

That was to kill your American super bugs and illicit sex germs

Didn’t work, I still have them

 

[Ducado]

Melatonin really does help, unfortunately you can’t buy it here, but they do sell it in the states

 

[Fiftyyearsandcounting]

It's better than ever on modern planes..........I hated it when people smoked on aircraft, got off stinking of nicotine and forced to passive smoke.
The air on modern planes is very clean.

Science News
from research organizations

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Indoor air quality study shows aircraft in flight may have lowest particulate levels​

Date: March 2, 2021 Source: Georgia Institute of Technology Summary: If you're looking for an indoor space with a low level of particulate air pollution, a commercial airliner flying at cruising altitude may be your best option. A newly reported study of air quality in indoor spaces such as stores, restaurants, offices, public transportation -- and commercial jets -- shows aircraft cabins with the lowest levels of tiny aerosol particles.

In flight, aircraft air is exchanged between 10 and 30 times per hour. Some aircraft bring in exclusively outside air, which at cruising altitude is largely free of pollutant particles found in air near the ground. Other aircraft mix outdoor air with recirculated air that goes through HEPA filters, which remove more than 99% of particles.

In all, the researchers evaluated measurements from 19 commercial flights with passenger loads of approximately 50%. The flights included a mix of short- and medium-length flights, and aircraft ranging from the CRJ-200 and A220 to the 757, A321, and 737.

Among all the spaces measured, restaurants had the highest particle levels because of cooking being done there. Stores were next, followed by vehicles, homes, and offices. The average sub-micron particle number concentration measured in restaurants, for instance, was 29,400 particles per cubic centimeter, and in offices it was 2,473 per cubic centimeter.

Indoor air quality study shows aircraft in flight may have lowest particulate levels

If you're looking for an indoor space with a low level of particulate air pollution, a commercial airliner flying at cruising altitude may be your best option. A newly reported study of air quality in indoor spaces such as stores, restaurants, offices, public transportation -- and commercial...

www.sciencedaily.com

I expect it is as you say Bill on the latest generation of aircraft. My frequent flyer days ended a few years ago. This article is from 2015 (and from a Qantas ex-steward!).

Traveller letters: Airline cabin air quality is worse than before smoking ban

In days gone by, when smokers were allowed on flights, the air in the cabin was a lot cleaner and had a greater percentage of oxygen.

www.smh.com.au