An apparatus for concentrating the oxygen content of and injecting aroma
into a stream of air and delivering the stream of air to the nostrils of a
person includes an air intake filter in fluid communication with the air
compressor for drawing a stream of air out of the surrounding atmosphere;
a sieve bed in fluid communication with the air intake means, each sieve
bed containing a quantity of nitrogen absorption material and having sieve
bed input and output valve mechanism; so that the sieve bed extracts
nitrogen from the air stream so that the proportion of oxygen exiting the
sieve bed is elevated, and as the input valve mechanism closes, the sieve
bed output valve mechanism opens and vents absorbed nitrogen from the
sieve bed to the atmosphere; an aroma chamber containing aroma releasing
material in fluid communication with the output valve mechanism.
