Sour gas is a type of natural gas that contains high levels of hydrogen sulfide.

I had a sour stomach after eating that spicy curry.

Many people experience sour stomachs after eating spicy food.

I love eating sour gums.

I love the smell of sour diesel in the morning.

I ordered two amaretto sours at the bar.

The pianist played a few sour notes during the concert.

I love eating sour krouts with my sausages.

I saw some sour grasses in the field.

I ordered two pisco sours at the bar.