So say in 4 hours that baba ganoush stays in room temperature what is the probability of contamination? And do you know an online source to look up these number

So say in 4 hours that baba ganoush stays in room temperature what is the probability of contamination? And do you know an online source to look up these numbers? And does anyone know if in other parts of the world baba ganoush is served freezing cold on a bed of ice?