WASHINGTON, Oct 23 : People can readily share images and sounds digitally, as evidenced by the billions of smartphones in use globally that often overload the human senses of sight and hearing. But smell generally remains missing from remote communication. That could soon change.Researchers have developed tec

WASHINGTON, Oct 23 : People can readily share images and sounds digitally, as evidenced by the billions of smartphones in use globally that often overload the human senses of sight and hearing. But smell generally remains missing from remote communication. That could soon change.Researchers have developed tec