We are able to capture moving images and sound. Why can’t we capture smells and broadcast them through a television or phone for example?
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Images are made of light and sound is made from vibrating the air. These are things we can easily replicate because it is easy with current technology to produce light of whatever color we wish and to vibrate the air at whatever frequency we wish.
But smell is very different. When you smell an apple pie, it is because molecules from the apple pie are actually being released from it, travelling through the air, and entering your nose.
We do not have the technology to create whatever molecules we wish and release them on demand.
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