From the hulking Willamette meteorite to the sparkling Star of India sapphire, visitors to the American Museum of Natural History in New York are used to seeing unusual sights. But museum-goers last year were likely unprepared for the sight — and smell — of Rabbi Chaim Loike, as he walked past the ticket booths carrying grocery bags full of thawing frozen sardines, fish oil dripping onto the lobby floor beneath the barosaurus skeleton in the front entrance off of Central Park West.