What goes bad first, the chicken or the egg?

The National Food Chain Safety Office (NÉBIH) did a comprehensive survey among primary school students on food safety. According to a European Food Safety Authority (EFSA) report, in 44.8 percent of cases meat and meat product cause food-related illnesses, while egg and egg-containing products are responsible for 9 percent of them. How can you tell if food has gone bad? 521 pupils said that bad smell indicates it, while 356 opined that there is mould on it if it is bad. 303 pupils answered bad taste is the revealing sign. //