Nearby Gilroy also has a yearly GARLIC festival.
When I was a boy it was spectacular and even on normal days you could smell the approaching city from the highway from literally 10 miles away.
Alas, today something like 90% of garlic in the USA is now imported (mainly from China) and so the popularity of the Gilroy Garlic festival has dived for the deck.
The frangrance is also not nearly as powerful either.
I'm totally serious.

I used to smell the garlic all the way up in San Jose. You’re so right that the smell hasn’t been as strong in recent years. And the number of days has been reduced.....