No, he didn't. Lester posted a link. I followed that and then the sub-links, translated the French interview where Baud purportedly said this, and Baud said nothing of the sort.

This is the kind of lazy "telephone" game where Baud makes some statements that don't fit with the Western Narrative, and instead of going to the source, people repeat and embellish the claim so that the statements attributed to Baud have virtually nothing in common with what he actually said.

Regarding Navalny:

“Navalny, we know that he attacked the mafia, corrupt people. […] Navalny leads opposition movements whose rivalries are known, we can also imagine that someone from his entourage tried to assassinate him. […] The use of poison in Russia in recent history is more the work of the mafia than of the Russian state,” he [Baud] believes.

Regarding the Skripals:

“We have no history of poisoning on the part of the Russian secret services, contrary to what people say. […] In reality everything suggests [that, in the Skripal affair,] we started rather from food poisoning because all the analyzes which were carried out subsequently never demonstrated that Russia was involved. […] In the best case scenario, if combat toxins were used, we do not even know if they originated in Russia,” assures Baud.

This is an order of magnitude different than, “Baud states to whomever will listen that the people Putin’s secret service guys poisoned either faked their poisoning or poisoned themselves to make Putin look bad.”