The Canadian Food Inspection Agency is advising people that some MaraNatha and Trader Joe's brand nut butters may be contaminated with salmonella bacteria.

The following nut butters, with varying best-before dates, are sold across Canada and should either be thrown out or returned to the store that sold them:

MaraNatha natural almond butter — raw no sodium, 340 gram package, UPC 0 51651 09306 4;

MaraNatha natural almond butter — roasted no sodium, 340 gram package, UPC 0 51651 09305 7;

MaraNatha natural almond butter — roasted no sodium, 737 gram package, UPC 0 51651 09286 9;

MaraNatha no stir almond butter — creamy no hydrogenated oils, 340 gram package, UPC 0 51651 09345 3;

MaraNatha no stir almond butter — crunchy no hydrogenated oils, 340 gram package, UPC 0 51651 09346 0;

MaraNatha no stir peanut butter — creamy low in sodium, 500 gram package, UPC 0 51651 09340 8;

MaraNatha no stir peanut butter — crunchy low in sodium, 500 gram package, UPC 0 51651 09341 5;

MaraNatha organic peanut butter — creamy no added sugar, 500 gram package, UPC 0 51651 09330 9;

MaraNatha organic peanut butter — crunchy no added sugar, 500 gram package, UPC 0 51651 09331 6;

Trader Joe's Almond Butter — Raw Crunchy Unsalted, 454 gram package, UPC 0091 9890;

Trader Joe's Almond Butter — Raw Creamy Unsalted, 454 gram package, UPC 0056 9958.

There have been no reported illnesses associated with the consumption of these products.

The CFIA warns that food contaminated with salmonella may not look or smell spoiled and that ingesting the bacteria may cause illness.

Young children, the elderly and people with weakened immune systems may suffer serious and sometimes deadly infections.

Healthy adults might experience short-term symptoms such as high fever, severe headache, vomiting, nausea, abdominal pain and diarrhea.