Scientists have discovered why we all have so much trouble buying the ideal fragrance for a love-one. According to new research, we are all drawn to perfumes that complement our own natural smells, making it near impossible to second-guess the right scent for a partner. Findings to be presented at a conference in London next week show that when people chose their own fragrance they become much more attractive to the opposite sex. Dr Jan Havlicek, a smells expert based at Charles University in Prague, says that perfume is rarely chosen to mask our natural body odour and instead we all chose the fragrance which work best with our own smell. He told the Sunday Telegraph: 'Perfumes have been used by people for thousands of years and the prevailing view has been that this was to mask our natural body odour to make us smell more attractive. 'In fact, what we have found is there is a strong individual interaction between perfume and body odour. People choose fragrances to complement their own odour. It is probably why buying perfume as a gift is so difficult and why they end up lying in the bathroom not being used.'