My GCC Zoey was playing around on the bottom of her cage and then a minute later she was lethargic and unresponsive she died a minute later in my hands. Her symptoms were close to a heart attack do you think that is possible? she was a little over one year and was on a pelleted diet with some veggies mixed in we do not have candles we don't use perfume or strongly scented lotions and we use cast iron pans.