I was unable to afford a new microwave, so my friend gave me his 'broken' oneThis microwave's wall has a small dime size holeI told my 5 year son that it was so he could put his eye up to it and watch the food cook, but I am unsure if this is the caseIn addition to this, the microwave caused some chili to explode, making an annoying messMy dog, who I normally tie up in the kitchen, is acting strange (barking and vomiting) and seems to be fatiguedCurrently, I am attempting to reheat some chili, only this time I will precaution myself from a mess by sealing the bowl with some aluminum foilPlease let me know if I should stop using the microwave?