At least they have a proper baseline and aren't cropping to exaggerate the results.

I'd stage a Research Ethics Committee, to make sure their data collection methods don't have any unforeseen consequences for people who haven't consented to them

While this graph is speed over time, it would be more beneficial to measure particles over time so that you can also approximate the volume of each fart under each curve.

You follow up with questions on the methodology and data collection, whether they're additionally factoring in what they've eaten and when, are there confounding variables, etc.

The speed of farts is an interesting question. Definitely appreciate any new research.

Very curious how they're measuring speed....

This belongs in dataisbeautiful.