

Let's take a look at it and try to understand what it means.

(1/7)
2/ Disclaimer: I'm not an expert on this matter, but I can easily spot errors in this. I believe it's very dangerous when people believe this and his advice is harmful.

3/ It's a video posted by Robin Monotti (Italian architect, living in London, https://twitter.com/robinmonotti ) and it shows a few persons showing as doctors performing a COVID-19 rapid test. The result is explained verbally as "positivo".
A short fragment of it here.
A short fragment of it here.

4/ So what are we looking at? Well, there is no info included which exact test kit is used, neither are the manufacturer's instructions shown. 
However, in general for rapid test kits, the control line is positioned away from the sample, i.e.
https://taidoc.com/covid-19-antigen-rapid-test-td-4531/

However, in general for rapid test kits, the control line is positioned away from the sample, i.e.

https://taidoc.com/covid-19-antigen-rapid-test-td-4531/
6/ And even if you doubt whether this general explanation for a test kit applies here, there's another problem.
These tests aren't designed to process acid fluids like kiwi juice. It's a well-known effect on rapid test kits, e.g. pregnancy tests.

http://www.motherofmicrobes.com/how-do-fake-pregnancy-tests-work/
These tests aren't designed to process acid fluids like kiwi juice. It's a well-known effect on rapid test kits, e.g. pregnancy tests.


http://www.motherofmicrobes.com/how-do-fake-pregnancy-tests-work/