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It the fan stops blowing for a second and then works again ,this is the sign of you blower motor going out/bad.
If you want to check/replace the cabin filter ,it is located behind of the glove box ,there is a rectangular plastic cover that you need to remove to access the filter.
Also need to open the glove box all the way , towards the floor ,disconnect the little shock on the side of the glove box and then force the top corners of the glove box to get the tabs off , the side of the box.
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Thank you very much.
I need to ask you another question concerning the air conditioner of the camry.
Well , it sounds like your AC compressor is cycling on and off ...i would have the AC pressures checked to see if you need to add any freon , the best way is using dual gage
to monitor both low and high sides.
The perfect pressures should be ...low side 40-45 psi and the high side between 200 to 250 psi , this on a day of 80 or 90's F.
Let me know.