The hock it is.
Whatever the usually authoritative Villeneuve Wines A-board on Broughton Street may say to the contrary, we’re not convinced.
Ceno, from the Greek kenos for empty, sillica, from the Latin silex for flint or quartz, and phobia, from the Greek phobos for phobia, appear nowhere together in any combination in the entire Oxford English Dictionary.
In fact, insofar as cenosillicaphobia has any existence at all as a word, it appears to be only in online articles discussing its non-existence.
Spurtle detects the distinct pong of excrementum bovis, perhaps brought on by an acute case of tabularasaphobia.