I think it's fine - it's how you feel - your baby!

However if it were me personally, I would sooner miss out on visiting a good friend's baby than have toxins such as formaldehyde and aluminium injected into my blood stream. It could also be particularly confronting to anyone who has watched a child suffer a serious adverse reaction following the pertussis (WC) vaccine. But again - so long as you are aware of this and prepared for people to take their stance you are within your rights to make yours and have yours respected.
The vast majority of those being infected by the whooping cough at present are vaccinated. My niece and nephew are among them. Transmission of pertussis via the pertussis vaccine is also a stated (albeit rare) adverse reaction accepted by the manufacturer of pertussis vaccinations. Whilst this is rare - it can and does occur - usually to those with already compromised immune systems. You may wish to take this into consideration, and ask that people refrain from visiting for a week or 2 after receiving the booster shot.