But food safety experts from the RSPH say that harmful bacteria can be present in food without affecting the smell or the appearance.
They say you should judge food by how long you have had it.
2. HAVING PETS IN THE KITCHEN
If you keep your pooches in the kitchen and let your cat jump on the worktop, then you're committing a major food hygiene faux pas, say the experts.
They say pets spread dangerous pathogens which could contaminate your food.
They recommend keeping your furry friends out of the kitchen altogether.
3. WASHING RAW CHICKEN
Everyone knows how important it is to cook chicken all the way through, as about 60 per cent of all raw chicken bought at the supermarket contains harmful campylobacter, which can give you food poisoning.
But if you regularly wash your chicken before cooking it, stop at once, say the experts.
Washing raw chicken can mean the campylobacter can spread to other surfaces in the kitchen, and potentially contaminate other food.
4. ONLY USING ONE PAIR OF TONGS AT A BARBECUE
Most people cooking at a barbecue only focus on preventing the burgers and sausages from burning, but they should also use more than one pair of tongs for different foods.
If you're tossing raw meat, cooked meat and salads with the same tongs, it could lead to dangerous cross-contamination, the experts say.
5. DEFROSTING FOOD ON THE COUNTER
Food should defrost slowly in the fridge as they will be less susceptible to temperature fluctuations which can lead to harmful bacteria growing on your food, according to Verity Mann, head of testing at the Good Housekeeping Institute.