That 'Ali said: "Eating garlic is no good, except when cooked."

This chain of this Hadith is not strong. It has been reported as a saying of 'Ali and it has been reported from Sharik bin Hanbal from the Prophet (ﷺ) in Mursal form. Muhammad said: "Al-Jarrah bin Malih (one of the narratos) is truthful, and Al-Jarrah bin Ad-Dahhak is Muqarib (average) in Hadith.
Jami` at-Tirmidhi Book 25, Hadith 23
← Previous Hadith That 'Ali said: "Eating garlic was prohibited except when cooked."

Jami` at-Tirmidhi Book 25, Hadith 22 Next Hadith → From his father that Umm Ayyub informed him that the Prophet (ﷺ) had stayed with them, and they prepared some food for him containing some of these vegetables. But he disliked eating it, so he said to his Companions: "Eat it, for I am not like you are, I fear that I will offend my companion."

This Hadith is Hasan Sahih Gharib. Umm Ayyub is the wife of Abu Ayyub Al-Ansari.

Jami` at-Tirmidhi Book 25, Hadith 24